I did the Timoshenko analyses for square clamped (and simply supported)
bossed rectangular diaphragms.

Are you associated with a commercial or an educational institution?  I did
the work for another commercial company, and I may be able to get you this
information.

Jarlath

----------
> From: WJ Karl <ELP95WJK@sheffield.ac.uk>
> To: MEMS@ISI.EDU
> Subject: Membrane deflection
> Date: Thursday, July 30, 1998 12:06 PM
>
>  Dear colleages,
>
>  I am looking for an analytical solution to calculate the deflection
>  and the stress/strain behaviour of a clamped circular/square or
>  rectangular membrane. It seems there is no complete analytical
>  model for this published (especially in the rectangular case) and
>  everybody uses FEM instead.
>
>  I am looking for a plug-in solution able to do the following (yes,
>  I am optimistic ..) :
>
>  + any geometry/aspect ratio (rectangular case) can be calculated
>  + deflections bigger than membrane thickness are valid
>  + deflection and strain/stress values as function of position
>
>  Any hint appreciated. Please ... don't just mention Timoshenko.
>
>  Thanks,
>
>  Werner.
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